Research article summary:

Neuropsychological performance in DSM-IV ADHD subtypes: an exploratory study with untreated adolescents.

Abstract Extract:
OBJECTIVE: To explore neuropsychological performance in untreated Brazilian adolescents suffering from attention-deficit hyperactivity disorder (ADHD). METHOD: We assessed 30 untreated adolescents with ADHD and 60 healthy control subjects, aged 12 to 16 ... (Full abstract text below)

Published 2002Nov in Journal: Can J Psychiatry (Language : eng)

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1. Can J Psychiatry. 2002 Nov;47(9):863-9

Neuropsychological performance in DSM-IV ADHD subtypes: an exploratory study with untreated adolescents.

Schmitz M, Cadore L, Paczko M, Kipper L, Chaves M, Rohde LA, Moura C, Knijnik M

Federal University of Rio Grande do Sul, Porto Alegre, Brazil.

OBJECTIVE: To explore neuropsychological performance in untreated Brazilian adolescents suffering from attention-deficit hyperactivity disorder (ADHD). METHOD: We assessed 30 untreated adolescents with ADHD and 60 healthy control subjects, aged 12 to 16 years, using a neuropsychological battery including the Wisconsin Card-Sorting Test (WCST), the Stroop Test (ST), the Digit Span, and the Word Span. RESULTS: We found neuropsychological differences among the DSM-IV ADHD subtypes. Adolescents with the predominantly inattentive subtype (ADHD-I) performed more poorly than did control subjects on both the Digit Span and the ST. On both the Digit Span and the WCST, adolescents with the combined subtype (ADHD-C) presented significantly more impairments than did control subjects. Adolescents with the predominantly hyperactive-impulsive type (ADHD-HI) did not differ significantly from the control subjects in any measure assessed, but had a better performance than did those with ADHD-C on both the Digit Span and the WCST. In addition, adolescents with ADHD-HI performed better on the ST than did adolescents with ADHD-I. CONCLUSIONS: These findings suggest cognitive differences among ADHD subtypes, supporting the diagnostic distinction among them. Adolescents with ADHD-HI do not seem to have significant cognitive deficits.

PMID : 12500757 [PubMed - Indexed for MEDLINE]

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Full Author Information

First Name	LastName	Initials
Marcelo	Schmitz	M
Luciana	Cadore	L
Marcelo	Paczko	M
Letícia	Kipper	L
Márcia	Chaves	M
Luis A	Rohde	LA
Clarissa	Moura	C
Márcia	Knijnik	M

Affiliation: Federal University of Rio Grande do Sul, Porto Alegre, Brazil.

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Category links from this article:

Adolescent
Attention Deficit Disorder with Hyperactivity - complications, therapy
Child
Cognition Disorders - diagnosis, epidemiology, etiology
Cross-Cultural Comparison
Female
Humans
Male
Mental Health Services - utilization
Neuropsychological Tests
Severity of Illness Index

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